$partialdiff sub Y$ [ Princeton tmax ]
grid: /T (days since 1960-01-01 00:00:00) ordered (0000 1 Jan 1948) to (0000 31 Dec 2008) by 1.0 N= 22281 pts :grid
∂
Y
Maximum air temperature
(57.2957795130823 degree_Kelvin radian-1 north) [ Longitude Latitude Time ]